NACA-TN-1468 : Low-speed static stability and damping-in-roll characteristics of some swept and unswept low-aspect-ratio wings
سازمان: NASA - National Aeronautics and Space Administration (NASA)
کلید واژه: AIRFOILS , ASPECT , DAMPING , DELTA , DIHEDRAL , DIRECTIONAL , FREE , LMAL , LONGITUDINAL , NACA , RATIO , RECTANGULAR , ROLL , SMALL , SPINNING , STABILITY , STATIC , SWEPTBACK , TAPERED , TESTS , TUNNEL , WIND , WINGS , WORK
سال: 1947
زبان: English
قیمت: 55000 تومان
INTRODUCTION
The recent trend toward the use of low-aspect-ratio wings for high-speed flight requires that the low-speed stability and control characteristics of such configurations be determined. Some work has been done to determine the static stability characteristics of unswept low-aspect-ratio wings (for example, reference 1). The present investigation was undertaken to extend this work to include the damping-in-roll and static stability characteristics of both swept and unswept low-aspect-ratio wings. The swept wings were of triangular or approximately triangular plan form.
This investigation consisted of force and damping-in-roll tests of 18 wings having different aspect ratios, taper ratios, and sweepback angles. Most of the wings were of low aspect ratio (ascot ratio < 3) although four wings of higher aspect ratio were included for comparison.